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Título del libro: 2004 1st International Conference On Electrical And Electronics Engineering, Iceee
Título del capítulo: Automated calibration of graduated scales

Autores UNAM:
BENJAMIN VALERA OROZCO; SERGIO PADILLA OLVERA;
Autores externos:

Idioma:
Inglés
Año de publicación:
2004
Palabras clave:

Computer software; Electrical engineering; Electronics engineering; Hardware; Measurements; Standards; Automated control; Gemetrical metrology fields; Calibration


Resumen:

In the geometrical metrology field, calibration of graduated scales is performed by comparison of the scale under inspection against a length standard at specific intervals. The procedure can take a long time due to the human intervention as a part of an observation process at each measurement interval. For example, the calibration of a scale of 1m can be divided in intervals of 1cm, which results in a process with around 100 measurements. This paper describes a fully automated measurement instrument used in the calibration of graduated scales. The instrument avoids the human intervention by means of computer vision hardware and software and automated control. The measurement acquisition is done in known length intervals by the accurate positioning of an observation device and then applying computer vision techniques in order to recognize the magnitude in the scale. The measurements are compared against those reported by the length standard to complete a calibration chart. The system described here improves the overall performance in relation to the manual method. © 2004 IEEE.


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